IgM antibodies are the first to be produced by the body in response to a VZV infection. They are present in most individuals within a week or two after the initial exposure. IgM antibody production RISES for a short time period and declines. Eventually, the level (titer) of VZV IgM antibody usually falls below detectable levels. Additional IgM may be produced when latent VZV is reactivated. See Varicella zoster Virus Antibodies, IgG, Serum
Separate serum from cells ASAP or within 2 hours of collection.